it's an un -- not an unemployment rate or a number of homes purchased. but it is a number. not one we can agree what we're measuring. we told you in the last segment, the consumer confidence index for october was 72.2. the highest in more than four years. it was based on a monthly sauer vase by a nonprofit organization called the conference board. get this. they're not the only ones with a number. according to a survey done by the university of michigan and thompson reuters, the consumer sentiment index is at a five-year high at 82.6 in october, 82.7 in november. whether you want to go with 72.2 or 82.7, you just got to ask out of what? out of 100? 82 what? it doesn't really work like that. it's like celsius and fahrenheit of consumer economics. all quantifying an emotion. really it's about how we as consumers are feeling. what tangible information can we derive from that. back with me making change at walmarts dan slad man. carmen wong and heather mcghee. carmen, what is this consumer index and why is it so important. >> when the index is high, we want to buy. that's what